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－Were you at home at 7 o'clock last night?
－Yes,I ________ a shower at that time．
A．
took
B．
was taking
C．
was taken
D．
am taking
－Were you at home at 7 o' clock last night?
－Yes, I ________ a shower at that time．
A．took
B．was taking
C．was taken
D．am taking